Poostchi Ophthalmology Research Center, Shiraz University of Medical Sciences

E mail:

smszaheryany@gmail.com

Phone:

Mobile:

09125243315

Purpose:

Most of our visual perception occurs during fixation. Fixational eye movements (microsaccades, drift & tremor) occur at different frequencies and amplitudes. Frequencies of 0.3 to 5 Hz have been reported for microsaccades. Yarbus reported 95-97% of fixation time can be atttributed to drift and up to frequency of 100 Hz has been noted for tremor in different studies. The device and algorithm should be able to detect such movements to paint an accurate picture of the eye movements involved in visual perception. For a study like evaluation of fixational eye movements with such high frequency and low amplitude, accuracy is the most important consideration.